Numerous challenges face geographically distributed teams who are expected to perform as physically colocated teams: to provide deliverables, meet project schedules, and to generate feasible and even innovative problem solutions—all from a distance. Limitations due to technology and distance make it difficult for geographically distributed teams to develop necessary social processes in order to function as a "well-formed" team. This paper discusses three challenges for these teams, based on results of an empirical study of virtually colocated teams, along with a reexamination of past empirical studies. These challenges are: (1) achieving a high standard of participation, which affects impressions, interaction patterns, and trust; (2) developing an appropriate culture, for motivation and cooperation; and (3) integrating the remote team suitably into members' local working spheres. In the conclusion, future research directions and technology requirements to help meet these challenges are discussed.